FFmpeg: libavcodec/msmpeg4enc.c Source File

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libavcodec

msmpeg4enc.c

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1 /*

2 * MSMPEG4 encoder backend

5 *

6 * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>

7 *

8 * This file is part of FFmpeg.

9 *

10 * FFmpeg is free software; you can redistribute it and/or

11 * modify it under the terms of the GNU Lesser General Public

12 * License as published by the Free Software Foundation; either

13 * version 2.1 of the License, or (at your option) any later version.

14 *

15 * FFmpeg is distributed in the hope that it will be useful,

16 * but WITHOUT ANY WARRANTY; without even the implied warranty of

17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

18 * Lesser General Public License for more details.

19 *

20 * You should have received a copy of the GNU Lesser General Public

21 * License along with FFmpeg; if not, write to the Free Software

22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

23 */

25 /**

26 * @file

27 * MSMPEG4 encoder backend

28 */

30 #include <stdint.h>

31 #include <string.h>

33 #include "libavutil/attributes.h"

34 #include "libavutil/avutil.h"

35 #include "libavutil/thread.h"

36 #include "codec_internal.h"

37 #include "mpegvideo.h"

38 #include "mpegvideoenc.h"

39 #include "h263.h"

40 #include "h263data.h"

41 #include "mpeg4video.h"

42 #include "msmpeg4.h"

43 #include "msmpeg4data.h"

44 #include "msmpeg4_vc1_data.h"

45 #include "msmpeg4enc.h"

46 #include "put_bits.h"

47 #include "rl.h"

49 static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2];

51 /* build the table which associate a (x,y) motion vector to a vlc */

52 static av_cold void init_mv_table(MVTable *tab, uint16_t table_mv_index[4096])

53 {

54 int i, x, y;

56 tab->table_mv_index = table_mv_index;

58 /* mark all entries as not used */

59 for(i=0;i<4096;i++)

60 tab->table_mv_index[i] = MSMPEG4_MV_TABLES_NB_ELEMS;

62 for (i = 0; i < MSMPEG4_MV_TABLES_NB_ELEMS; i++) {

63 x = tab->table_mvx[i];

64 y = tab->table_mvy[i];

65 tab->table_mv_index[(x << 6) | y] = i;

66 }

67 }

69 void ff_msmpeg4_code012(PutBitContext *pb, int n)

70 {

71 if (n == 0) {

72 put_bits(pb, 1, 0);

73 } else {

74 put_bits(pb, 2, 2 | (n >= 2));

75 }

76 }

78 static int get_size_of_code(const RLTable *rl, int last, int run,

79 int level, int intra)

80 {

81 int size=0;

82 int code;

83 int run_diff= intra ? 0 : 1;

85 code = get_rl_index(rl, last, run, level);

86 size+= rl->table_vlc[code][1];

87 if (code == rl->n) {

88 int level1, run1;

90 level1 = level - rl->max_level[last][run];

91 if (level1 < 1)

92 goto esc2;

93 code = get_rl_index(rl, last, run, level1);

94 if (code == rl->n) {

95 esc2:

96 size++;

97 if (level > MAX_LEVEL)

98 goto esc3;

99 run1 = run - rl->max_run[last][level] - run_diff;

100 if (run1 < 0)

101 goto esc3;

102 code = get_rl_index(rl, last, run1, level);

103 if (code == rl->n) {

104 esc3:

105 /* third escape */

106 size+=1+1+6+8;

107 } else {

108 /* second escape */

109 size+= 1+1+ rl->table_vlc[code][1];

110 }

111 } else {

112 /* first escape */

113 size+= 1+1+ rl->table_vlc[code][1];

114 }

115 } else {

116 size++;

117 }

118 return size;

119 }

120

121 static av_cold void msmpeg4_encode_init_static(void)

122 {

123 static uint16_t mv_index_tables[2][4096];

124 init_mv_table(&ff_mv_tables[0], mv_index_tables[0]);

125 init_mv_table(&ff_mv_tables[1], mv_index_tables[1]);

126

127 for (int i = 0; i < NB_RL_TABLES; i++) {

128 for (int level = 1; level <= MAX_LEVEL; level++) {

129 for (int run = 0; run <= MAX_RUN; run++) {

130 for (int last = 0; last < 2; last++) {

131 rl_length[i][level][run][last] = get_size_of_code(&ff_rl_table[i], last, run, level, 0);

132 }

133 }

134 }

135 }

136 }

137

138 av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)

139 {

140 static AVOnce init_static_once = AV_ONCE_INIT;

141

142 ff_msmpeg4_common_init(s);

143 if (s->msmpeg4_version >= MSMP4_WMV1) {

144 s->min_qcoeff = -255;

145 s->max_qcoeff = 255;

146 }

147

148 /* init various encoding tables */

149 ff_thread_once(&init_static_once, msmpeg4_encode_init_static);

150 }

151

152 static void find_best_tables(MSMPEG4EncContext *ms)

153 {

154 MpegEncContext *const s = &ms->s;

155 int i;

156 int best = 0, best_size = INT_MAX;

157 int chroma_best = 0, best_chroma_size = INT_MAX;

158

159 for(i=0; i<3; i++){

160 int level;

161 int chroma_size=0;

162 int size=0;

163

164 if(i>0){// ;)

165 size++;

166 chroma_size++;

167 }

168 for(level=0; level<=MAX_LEVEL; level++){

169 int run;

170 for(run=0; run<=MAX_RUN; run++){

171 int last;

172 const int last_size= size + chroma_size;

173 for(last=0; last<2; last++){

174 int inter_count = ms->ac_stats[0][0][level][run][last] + ms->ac_stats[0][1][level][run][last];

175 int intra_luma_count = ms->ac_stats[1][0][level][run][last];

176 int intra_chroma_count= ms->ac_stats[1][1][level][run][last];

177

178 if(s->pict_type==AV_PICTURE_TYPE_I){

179 size += intra_luma_count *rl_length[i ][level][run][last];

180 chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last];

181 }else{

182 size+= intra_luma_count *rl_length[i ][level][run][last]

183 +intra_chroma_count*rl_length[i+3][level][run][last]

184 +inter_count *rl_length[i+3][level][run][last];

185 }

186 }

187 if(last_size == size+chroma_size) break;

188 }

189 }

190 if(size<best_size){

191 best_size= size;

192 best= i;

193 }

194 if(chroma_size<best_chroma_size){

195 best_chroma_size= chroma_size;

196 chroma_best= i;

197 }

198 }

199

200 if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best;

201

202 memset(ms->ac_stats, 0, sizeof(ms->ac_stats));

203

204 s->rl_table_index = best;

205 s->rl_chroma_table_index= chroma_best;

206

207 if(s->pict_type != s->last_non_b_pict_type){

208 s->rl_table_index= 2;

209 if(s->pict_type==AV_PICTURE_TYPE_I)

210 s->rl_chroma_table_index= 1;

211 else

212 s->rl_chroma_table_index= 2;

213 }

214

215 }

216

217 /* write MSMPEG4 compatible frame header */

218 void ff_msmpeg4_encode_picture_header(MpegEncContext * s)

219 {

220 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)s;

221

222 find_best_tables(ms);

223

224 align_put_bits(&s->pb);

225 put_bits(&s->pb, 2, s->pict_type - 1);

226

227 put_bits(&s->pb, 5, s->qscale);

228 if (s->msmpeg4_version <= MSMP4_V2) {

229 s->rl_table_index = 2;

230 s->rl_chroma_table_index = 2;

231 }

232

233 s->dc_table_index = 1;

234 s->mv_table_index = 1; /* only if P-frame */

235 s->use_skip_mb_code = 1; /* only if P-frame */

236 s->per_mb_rl_table = 0;

237 if (s->msmpeg4_version == MSMP4_WMV1)

238 s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE && s->pict_type==AV_PICTURE_TYPE_P);

239 ff_dlog(s, "%d %"PRId64" %d %d %d\n", s->pict_type, s->bit_rate,

240 s->inter_intra_pred, s->width, s->height);

241

242 if (s->pict_type == AV_PICTURE_TYPE_I) {

243 s->slice_height= s->mb_height/1;

244 put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height);

245

246 if (s->msmpeg4_version == MSMP4_WMV1) {

247 ff_msmpeg4_encode_ext_header(s);

248 if(s->bit_rate>MBAC_BITRATE)

249 put_bits(&s->pb, 1, s->per_mb_rl_table);

250 }

251

252 if (s->msmpeg4_version > MSMP4_V2) {

253 if(!s->per_mb_rl_table){

254 ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);

255 ff_msmpeg4_code012(&s->pb, s->rl_table_index);

256 }

257

258 put_bits(&s->pb, 1, s->dc_table_index);

259 }

260 } else {

261 put_bits(&s->pb, 1, s->use_skip_mb_code);

262

263 if (s->msmpeg4_version == MSMP4_WMV1 && s->bit_rate > MBAC_BITRATE)

264 put_bits(&s->pb, 1, s->per_mb_rl_table);

265

266 if (s->msmpeg4_version > MSMP4_V2) {

267 if(!s->per_mb_rl_table)

268 ff_msmpeg4_code012(&s->pb, s->rl_table_index);

269

270 put_bits(&s->pb, 1, s->dc_table_index);

271

272 put_bits(&s->pb, 1, s->mv_table_index);

273 }

274 }

275

276 s->esc3_level_length= 0;

277 s->esc3_run_length= 0;

278 }

279

280 void ff_msmpeg4_encode_ext_header(MpegEncContext * s)

281 {

282 unsigned fps;

283

284 if (s->avctx->framerate.num > 0 && s->avctx->framerate.den > 0)

285 fps = s->avctx->framerate.num / s->avctx->framerate.den;

286 else {

287 FF_DISABLE_DEPRECATION_WARNINGS

288 fps = s->avctx->time_base.den / s->avctx->time_base.num

289 #if FF_API_TICKS_PER_FRAME

290 / FFMAX(s->avctx->ticks_per_frame, 1)

291 #endif

292 ;

293 FF_ENABLE_DEPRECATION_WARNINGS

294 }

295

296 put_bits(&s->pb, 5, FFMIN(fps, 31)); //yes 29.97 -> 29

297

298 put_bits(&s->pb, 11, FFMIN(s->bit_rate / 1024, 2047));

299

300 if (s->msmpeg4_version >= MSMP4_V3)

301 put_bits(&s->pb, 1, s->flipflop_rounding);

302 else

303 av_assert0(!s->flipflop_rounding);

304 }

305

306 void ff_msmpeg4_encode_motion(MpegEncContext * s,

307 int mx, int my)

308 {

309 int code;

310 MVTable *mv;

311

312 /* modulo encoding */

313 /* WARNING : you cannot reach all the MVs even with the modulo

314 encoding. This is a somewhat strange compromise they took !!! */

315 if (mx <= -64)

316 mx += 64;

317 else if (mx >= 64)

318 mx -= 64;

319 if (my <= -64)

320 my += 64;

321 else if (my >= 64)

322 my -= 64;

323

324 mx += 32;

325 my += 32;

326 mv = &ff_mv_tables[s->mv_table_index];

327

328 code = mv->table_mv_index[(mx << 6) | my];

329 put_bits(&s->pb,

330 mv->table_mv_bits[code],

331 mv->table_mv_code[code]);

332 if (code == MSMPEG4_MV_TABLES_NB_ELEMS) {

333 /* escape : code literally */

334 put_bits(&s->pb, 6, mx);

335 put_bits(&s->pb, 6, my);

336 }

337 }

338

339 void ff_msmpeg4_handle_slices(MpegEncContext *s){

340 if (s->mb_x == 0) {

341 if (s->slice_height && (s->mb_y % s->slice_height) == 0) {

342 if (s->msmpeg4_version < MSMP4_WMV1) {

343 ff_mpeg4_clean_buffers(s);

344 }

345 s->first_slice_line = 1;

346 } else {

347 s->first_slice_line = 0;

348 }

349 }

350 }

351

352 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)

353 {

354 int range, bit_size, sign, code, bits;

355

356 if (val == 0) {

357 /* zero vector */

358 code = 0;

359 put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]);

360 } else {

361 bit_size = s->f_code - 1;

362 range = 1 << bit_size;

363 if (val <= -64)

364 val += 64;

365 else if (val >= 64)

366 val -= 64;

367

368 if (val >= 0) {

369 sign = 0;

370 } else {

371 val = -val;

372 sign = 1;

373 }

374 val--;

375 code = (val >> bit_size) + 1;

376 bits = val & (range - 1);

377

378 put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);

379 if (bit_size > 0) {

380 put_bits(&s->pb, bit_size, bits);

381 }

382 }

383 }

384

385 void ff_msmpeg4_encode_mb(MpegEncContext * s,

386 int16_t block[6][64],

387 int motion_x, int motion_y)

388 {

389 int cbp, coded_cbp, i;

390 int pred_x, pred_y;

391

392 ff_msmpeg4_handle_slices(s);

393

394 if (!s->mb_intra) {

395 /* compute cbp */

396 cbp = 0;

397 for (i = 0; i < 6; i++) {

398 if (s->block_last_index[i] >= 0)

399 cbp |= 1 << (5 - i);

400 }

401 if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {

402 /* skip macroblock */

403 put_bits(&s->pb, 1, 1);

404 s->last_bits++;

405 s->misc_bits++;

406

407 return;

408 }

409 if (s->use_skip_mb_code)

410 put_bits(&s->pb, 1, 0); /* mb coded */

411

412 if (s->msmpeg4_version <= MSMP4_V2) {

413 put_bits(&s->pb,

414 ff_v2_mb_type[cbp&3][1],

415 ff_v2_mb_type[cbp&3][0]);

416 if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;

417 else coded_cbp= cbp;

418

419 put_bits(&s->pb,

420 ff_h263_cbpy_tab[coded_cbp>>2][1],

421 ff_h263_cbpy_tab[coded_cbp>>2][0]);

422

423 s->misc_bits += get_bits_diff(s);

424

425 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);

426 msmpeg4v2_encode_motion(s, motion_x - pred_x);

427 msmpeg4v2_encode_motion(s, motion_y - pred_y);

428 }else{

429 put_bits(&s->pb,

430 ff_table_mb_non_intra[cbp + 64][1],

431 ff_table_mb_non_intra[cbp + 64][0]);

432

433 s->misc_bits += get_bits_diff(s);

434

435 /* motion vector */

436 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);

437 ff_msmpeg4_encode_motion(s, motion_x - pred_x,

438 motion_y - pred_y);

439 }

440

441 s->mv_bits += get_bits_diff(s);

442

443 for (i = 0; i < 6; i++) {

444 ff_msmpeg4_encode_block(s, block[i], i);

445 }

446 s->p_tex_bits += get_bits_diff(s);

447 } else {

448 /* compute cbp */

449 cbp = 0;

450 for (int i = 0; i < 6; i++) {

451 int val = (s->block_last_index[i] >= 1);

452 cbp |= val << (5 - i);

453 }

454 if (s->msmpeg4_version <= MSMP4_V2) {

455 if (s->pict_type == AV_PICTURE_TYPE_I) {

456 put_bits(&s->pb,

457 ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]);

458 } else {

459 if (s->use_skip_mb_code)

460 put_bits(&s->pb, 1, 0); /* mb coded */

461 put_bits(&s->pb,

462 ff_v2_mb_type[(cbp&3) + 4][1],

463 ff_v2_mb_type[(cbp&3) + 4][0]);

464 }

465 put_bits(&s->pb, 1, 0); /* no AC prediction yet */

466 put_bits(&s->pb,

467 ff_h263_cbpy_tab[cbp>>2][1],

468 ff_h263_cbpy_tab[cbp>>2][0]);

469 }else{

470 if (s->pict_type == AV_PICTURE_TYPE_I) {

471 /* compute coded_cbp; the 0x3 corresponds to chroma cbp;

472 * luma coded_cbp are set in the loop below */

473 coded_cbp = cbp & 0x3;

474 for (int i = 0; i < 4; i++) {

475 uint8_t *coded_block;

476 int pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);

477 int val = (s->block_last_index[i] >= 1);

478 *coded_block = val;

479 val ^= pred;

480 coded_cbp |= val << (5 - i);

481 }

482

483 put_bits(&s->pb,

484 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);

485 } else {

486 if (s->use_skip_mb_code)

487 put_bits(&s->pb, 1, 0); /* mb coded */

488 put_bits(&s->pb,

489 ff_table_mb_non_intra[cbp][1],

490 ff_table_mb_non_intra[cbp][0]);

491 }

492 put_bits(&s->pb, 1, 0); /* no AC prediction yet */

493 if(s->inter_intra_pred){

494 s->h263_aic_dir=0;

495 put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]);

496 }

497 }

498 s->misc_bits += get_bits_diff(s);

499

500 for (i = 0; i < 6; i++) {

501 ff_msmpeg4_encode_block(s, block[i], i);

502 }

503 s->i_tex_bits += get_bits_diff(s);

504 s->i_count++;

505 }

506 }

507

508 static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr)

509 {

510 int sign, code;

511 int pred;

512

513 int16_t *dc_val;

514 pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);

515

516 /* update predictor */

517 if (n < 4) {

518 *dc_val = level * s->y_dc_scale;

519 } else {

520 *dc_val = level * s->c_dc_scale;

521 }

522

523 /* do the prediction */

524 level -= pred;

525

526 if (s->msmpeg4_version <= MSMP4_V2) {

527 if (n < 4) {

528 put_bits(&s->pb,

529 ff_v2_dc_lum_table[level + 256][1],

530 ff_v2_dc_lum_table[level + 256][0]);

531 }else{

532 put_bits(&s->pb,

533 ff_v2_dc_chroma_table[level + 256][1],

534 ff_v2_dc_chroma_table[level + 256][0]);

535 }

536 }else{

537 sign = 0;

538 if (level < 0) {

539 level = -level;

540 sign = 1;

541 }

542 code = level;

543 if (code > DC_MAX)

544 code = DC_MAX;

545

546 put_bits(&s->pb, ff_msmp4_dc_tables[s->dc_table_index][n >= 4][code][1],

547 ff_msmp4_dc_tables[s->dc_table_index][n >= 4][code][0]);

548

549 if (code == DC_MAX)

550 put_bits(&s->pb, 8, level);

551

552 if (level != 0) {

553 put_bits(&s->pb, 1, sign);

554 }

555 }

556 }

557

558 /* Encoding of a block; very similar to MPEG-4 except for a different

559 * escape coding (same as H.263) and more VLC tables. */

560 void ff_msmpeg4_encode_block(MpegEncContext * s, int16_t * block, int n)

561 {

562 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)s;

563 int level, run, last, i, j, last_index;

564 int last_non_zero, sign, slevel;

565 int code, run_diff, dc_pred_dir;

566 const RLTable *rl;

567 const uint8_t *scantable;

568

569 if (s->mb_intra) {

570 msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir);

571 i = 1;

572 if (n < 4) {

573 rl = &ff_rl_table[s->rl_table_index];

574 } else {

575 rl = &ff_rl_table[3 + s->rl_chroma_table_index];

576 }

577 run_diff = s->msmpeg4_version >= MSMP4_WMV1;

578 scantable= s->intra_scantable.permutated;

579 } else {

580 i = 0;

581 rl = &ff_rl_table[3 + s->rl_table_index];

582 run_diff = s->msmpeg4_version > MSMP4_V2;

583 scantable= s->inter_scantable.permutated;

584 }

585

586 /* recalculate block_last_index for M$ wmv1 */

587 if (s->msmpeg4_version >= MSMP4_WMV1 && s->block_last_index[n] > 0) {

588 for(last_index=63; last_index>=0; last_index--){

589 if(block[scantable[last_index]]) break;

590 }

591 s->block_last_index[n]= last_index;

592 }else

593 last_index = s->block_last_index[n];

594 /* AC coefs */

595 last_non_zero = i - 1;

596 for (; i <= last_index; i++) {

597 j = scantable[i];

598 level = block[j];

599 if (level) {

600 run = i - last_non_zero - 1;

601 last = (i == last_index);

602 sign = 0;

603 slevel = level;

604 if (level < 0) {

605 sign = 1;

606 level = -level;

607 }

608

609 if(level<=MAX_LEVEL && run<=MAX_RUN){

610 ms->ac_stats[s->mb_intra][n>3][level][run][last]++;

611 }

612

613 ms->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like

614

615 code = get_rl_index(rl, last, run, level);

616 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);

617 if (code == rl->n) {

618 int level1, run1;

619

620 level1 = level - rl->max_level[last][run];

621 if (level1 < 1)

622 goto esc2;

623 code = get_rl_index(rl, last, run, level1);

624 if (code == rl->n) {

625 esc2:

626 put_bits(&s->pb, 1, 0);

627 if (level > MAX_LEVEL)

628 goto esc3;

629 run1 = run - rl->max_run[last][level] - run_diff;

630 if (run1 < 0)

631 goto esc3;

632 code = get_rl_index(rl, last, run1+1, level);

633 if (s->msmpeg4_version == MSMP4_WMV1 && code == rl->n)

634 goto esc3;

635 code = get_rl_index(rl, last, run1, level);

636 if (code == rl->n) {

637 esc3:

638 /* third escape */

639 put_bits(&s->pb, 1, 0);

640 put_bits(&s->pb, 1, last);

641 if (s->msmpeg4_version >= MSMP4_WMV1) {

642 if(s->esc3_level_length==0){

643 s->esc3_level_length=8;

644 s->esc3_run_length= 6;

645 //ESCLVLSZ + ESCRUNSZ

646 if(s->qscale<8)

647 put_bits(&s->pb, 6, 3);

648 else

649 put_bits(&s->pb, 8, 3);

650 }

651 put_bits(&s->pb, s->esc3_run_length, run);

652 put_bits(&s->pb, 1, sign);

653 put_bits(&s->pb, s->esc3_level_length, level);

654 }else{

655 put_bits(&s->pb, 6, run);

656 put_sbits(&s->pb, 8, slevel);

657 }

658 } else {

659 /* second escape */

660 put_bits(&s->pb, 1, 1);

661 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);

662 put_bits(&s->pb, 1, sign);

663 }

664 } else {

665 /* first escape */

666 put_bits(&s->pb, 1, 1);

667 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);

668 put_bits(&s->pb, 1, sign);

669 }

670 } else {

671 put_bits(&s->pb, 1, sign);

672 }

673 last_non_zero = i;

674 }

675 }

676 }

677

678 const FFCodec ff_msmpeg4v2_encoder = {

679 .p.name = "msmpeg4v2",

680 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 2"),

681 .p.type = AVMEDIA_TYPE_VIDEO,

682 .p.id = AV_CODEC_ID_MSMPEG4V2,

683 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },

684 .color_ranges = AVCOL_RANGE_MPEG,

685 .p.priv_class = &ff_mpv_enc_class,

686 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

687 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,

688 .priv_data_size = sizeof(MSMPEG4EncContext),

689 .init = ff_mpv_encode_init,

690 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),

691 .close = ff_mpv_encode_end,

692 };

693

694 const FFCodec ff_msmpeg4v3_encoder = {

695 .p.name = "msmpeg4",

696 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 3"),

697 .p.type = AVMEDIA_TYPE_VIDEO,

698 .p.id = AV_CODEC_ID_MSMPEG4V3,

699 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },

700 .color_ranges = AVCOL_RANGE_MPEG,

701 .p.priv_class = &ff_mpv_enc_class,

702 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

703 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,

704 .priv_data_size = sizeof(MSMPEG4EncContext),

705 .init = ff_mpv_encode_init,

706 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),

707 .close = ff_mpv_encode_end,

708 };

709

710 const FFCodec ff_wmv1_encoder = {

711 .p.name = "wmv1",

712 CODEC_LONG_NAME("Windows Media Video 7"),

713 .p.type = AVMEDIA_TYPE_VIDEO,

714 .p.id = AV_CODEC_ID_WMV1,

715 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },

716 .color_ranges = AVCOL_RANGE_MPEG,

717 .p.priv_class = &ff_mpv_enc_class,

718 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

719 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,

720 .priv_data_size = sizeof(MSMPEG4EncContext),

721 .init = ff_mpv_encode_init,

722 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),

723 .close = ff_mpv_encode_end,

724 };

FF_ENABLE_DEPRECATION_WARNINGS

#define FF_ENABLE_DEPRECATION_WARNINGS

Definition: internal.h:73

ff_msmp4_dc_tables

const uint32_t ff_msmp4_dc_tables[2][2][120][2]

Definition: msmpeg4_vc1_data.c:83

h263data.h

AVPixelFormat

Pixel format.

Definition: pixfmt.h:71

ff_mpv_enc_class

const AVClass ff_mpv_enc_class

Definition: mpegvideo_enc.c:105

level

uint8_t level

Definition: svq3.c:205

FF_CODEC_CAP_INIT_CLEANUP

#define FF_CODEC_CAP_INIT_CLEANUP

The codec allows calling the close function for deallocation even if the init function returned a fai...

Definition: codec_internal.h:43

get_bits_diff

static int get_bits_diff(MpegEncContext *s)

Definition: mpegvideoenc.h:158

ff_msmpeg4_handle_slices

void ff_msmpeg4_handle_slices(MpegEncContext *s)

Definition: msmpeg4enc.c:339

align_put_bits

static void align_put_bits(PutBitContext *s)

Pad the bitstream with zeros up to the next byte boundary.

Definition: put_bits.h:420

ff_msmpeg4v3_encoder

const FFCodec ff_msmpeg4v3_encoder

Definition: msmpeg4enc.c:694

thread.h

mpegvideoenc.h

static const int8_t mv[256][2]

Definition: 4xm.c:81

put_sbits

static void put_sbits(PutBitContext *pb, int n, int32_t value)

Definition: put_bits.h:281

MAX_RUN

#define MAX_RUN

Definition: rl.h:35

MBAC_BITRATE

#define MBAC_BITRATE

Definition: msmpeg4.h:30

put_bits

static void put_bits(Jpeg2000EncoderContext *s, int val, int n)

put n times val bit

Definition: j2kenc.c:223

ff_msmpeg4_common_init

av_cold void ff_msmpeg4_common_init(MpegEncContext *s)

Definition: msmpeg4.c:117

FFCodec

Definition: codec_internal.h:127

ff_msmpeg4_encode_mb

void ff_msmpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)

Definition: msmpeg4enc.c:385

mpegvideo.h

FFMAX

#define FFMAX(a, b)

Definition: macros.h:47

ff_rl_table

RLTable ff_rl_table[NB_RL_TABLES]

Definition: msmpeg4data.c:441

ff_mpv_encode_picture

int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic_arg, int *got_packet)

Definition: mpegvideo_enc.c:1799

uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t mx

Definition: dsp.h:53

FFCodec::p

AVCodec p

The public AVCodec.

Definition: codec_internal.h:131

ff_h263_pred_motion

int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)

Definition: h263.c:179

ff_msmpeg4_encode_init

av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)

Definition: msmpeg4enc.c:138

RLTable

RLTable.

Definition: rl.h:39

tab

static const struct twinvq_data tab

Definition: twinvq_data.h:10345

ff_wmv1_encoder

const FFCodec ff_wmv1_encoder

Definition: msmpeg4enc.c:710

val

static double val(void *priv, double ch)

Definition: aeval.c:77

AV_CODEC_ID_MSMPEG4V2

@ AV_CODEC_ID_MSMPEG4V2

Definition: codec_id.h:67

FF_CODEC_ENCODE_CB

#define FF_CODEC_ENCODE_CB(func)

Definition: codec_internal.h:320

MSMPEG4EncContext::ac_stats

unsigned ac_stats[2][2][MAX_LEVEL+1][MAX_RUN+1][2]

[mb_intra][isChroma][level][run][last]

Definition: msmpeg4enc.h:33

NB_RL_TABLES

#define NB_RL_TABLES

Definition: msmpeg4data.h:51

RLTable::n

int n

number of entries of table_vlc minus 1

Definition: rl.h:40

ff_thread_once

static int ff_thread_once(char *control, void(*routine)(void))

Definition: thread.h:205

av_cold

#define av_cold

Definition: attributes.h:90

msmpeg4data.h

RLTable::max_level

int8_t * max_level[2]

encoding & decoding

Definition: rl.h:46

#define s(width, name)

Definition: cbs_vp9.c:198

get_rl_index

static int get_rl_index(const RLTable *rl, int last, int run, int level)

Definition: rl.h:101

AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE

#define AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE

This encoder can reorder user opaque values from input AVFrames and return them with corresponding ou...

Definition: codec.h:159

bits

uint8_t bits

Definition: vp3data.h:128

av_assert0

#define av_assert0(cond)

assert() equivalent, that is always enabled.

Definition: avassert.h:40

find_best_tables

static void find_best_tables(MSMPEG4EncContext *ms)

Definition: msmpeg4enc.c:152

AV_PIX_FMT_YUV420P

@ AV_PIX_FMT_YUV420P

planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)

Definition: pixfmt.h:73

PutBitContext

Definition: put_bits.h:50

ff_msmpeg4_encode_motion

void ff_msmpeg4_encode_motion(MpegEncContext *s, int mx, int my)

Definition: msmpeg4enc.c:306

CODEC_LONG_NAME

#define CODEC_LONG_NAME(str)

Definition: codec_internal.h:296

uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t my

Definition: dsp.h:53

AV_ONCE_INIT

#define AV_ONCE_INIT

Definition: thread.h:203

run

uint8_t run

Definition: svq3.c:204

RLTable::table_vlc

const uint16_t(* table_vlc)[2]

Definition: rl.h:42

ff_table_mb_non_intra

const uint32_t ff_table_mb_non_intra[128][2]

Definition: msmpeg4data.c:39

ff_v2_mb_type

const uint8_t ff_v2_mb_type[8][2]

Definition: msmpeg4data.c:1624

ff_v2_dc_lum_table

uint32_t ff_v2_dc_lum_table[512][2]

Definition: msmpeg4data.c:35

AV_PICTURE_TYPE_I

@ AV_PICTURE_TYPE_I

Intra.

Definition: avutil.h:279

ff_msmp4_mb_i_table

const uint16_t ff_msmp4_mb_i_table[64][2]

Definition: msmpeg4_vc1_data.c:63

ff_v2_dc_chroma_table

uint32_t ff_v2_dc_chroma_table[512][2]

Definition: msmpeg4data.c:36

ff_mpv_encode_end

av_cold int ff_mpv_encode_end(AVCodecContext *avctx)

Definition: mpegvideo_enc.c:1034

DC_MAX

#define DC_MAX

Definition: msmpeg4.h:32

AV_CODEC_ID_WMV1

@ AV_CODEC_ID_WMV1

Definition: codec_id.h:69

ff_msmpeg4v2_encoder

const FFCodec ff_msmpeg4v2_encoder

Definition: msmpeg4enc.c:678

AVOnce

#define AVOnce

Definition: thread.h:202

ff_dlog

#define ff_dlog(a,...)

Definition: tableprint_vlc.h:28

MAX_LEVEL

#define MAX_LEVEL

Definition: rl.h:36

MSMPEG4EncContext

Definition: msmpeg4enc.h:29

init

int(* init)(AVBSFContext *ctx)

Definition: dts2pts.c:368

ff_mpeg4_clean_buffers

void ff_mpeg4_clean_buffers(MpegEncContext *s)

Definition: mpeg4video.c:57

codec_internal.h

init_mv_table

static av_cold void init_mv_table(MVTable *tab, uint16_t table_mv_index[4096])

Definition: msmpeg4enc.c:52

MSMPEG4EncContext::s

MpegEncContext s

Definition: msmpeg4enc.h:30

for

for(k=2;k<=8;++k)

Definition: h264pred_template.c:425

ff_h263_cbpy_tab

const uint8_t ff_h263_cbpy_tab[16][2]

Definition: h263data.c:82

size

int size

Definition: twinvq_data.h:10344

ff_msmpeg4_encode_ext_header

void ff_msmpeg4_encode_ext_header(MpegEncContext *s)

Definition: msmpeg4enc.c:280

rl_length

static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2]

Definition: msmpeg4enc.c:49

II_BITRATE

#define II_BITRATE

Definition: msmpeg4.h:29

range

enum AVColorRange range

Definition: mediacodec_wrapper.c:2464

ff_msmpeg4_pred_dc

int ff_msmpeg4_pred_dc(MpegEncContext *s, int n, int16_t **dc_val_ptr, int *dir_ptr)

Definition: msmpeg4.c:196

ff_v2_intra_cbpc

const uint8_t ff_v2_intra_cbpc[4][2]

Definition: msmpeg4data.c:1629

attributes.h

msmpeg4_encode_dc

static void msmpeg4_encode_dc(MpegEncContext *s, int level, int n, int *dir_ptr)

Definition: msmpeg4enc.c:508

ff_msmpeg4_encode_picture_header

void ff_msmpeg4_encode_picture_header(MpegEncContext *s)

Definition: msmpeg4enc.c:218

#define i(width, name, range_min, range_max)

Definition: cbs_h2645.c:256

code

and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code

Definition: filter_design.txt:178

get_size_of_code

static int get_size_of_code(const RLTable *rl, int last, int run, int level, int intra)

Definition: msmpeg4enc.c:78

ff_mv_tables

MVTable ff_mv_tables[2]

Definition: msmpeg4data.c:1613

RLTable::max_run

int8_t * max_run[2]

encoding & decoding

Definition: rl.h:47

FFMIN